关于前端:createreactapp-v4-的lessantd配置

1、less 反对

• yarn eject
• yarn add less@^2.7.3 less-loader@^7.3.0
• 在 webpack.config.js 中找到 sassRegex

const cssRegex = /\.css$/;
const cssModuleRegex = /\.module\.css$/;
const sassRegex = /\.(scss|sass)$/;
const sassModuleRegex = /\.module\.(scss|sass)$/;
const lessRegex = /\.less$/;
const lessModuleRegex = /\.module\.less$/;

• 找到配置

  {
              test: sassRegex,
              exclude: sassModuleRegex,
              use: getStyleLoaders(
                {
                  importLoaders: 3,
                  sourceMap: isEnvProduction
                    ? shouldUseSourceMap
                    : isEnvDevelopment,
                },
                'sass-loader'
              ),
              // Don't consider CSS imports dead code even if the
              // containing package claims to have no side effects.
              // Remove this when webpack adds a warning or an error for this.
              // See https://github.com/webpack/webpack/issues/6571
              sideEffects: true,
            },
            // Adds support for CSS Modules, but using SASS
            // using the extension .module.scss or .module.sass
            {
              test: sassModuleRegex,
              use: getStyleLoaders(
                {
                  importLoaders: 3,
                  sourceMap: isEnvProduction
                    ? shouldUseSourceMap
                    : isEnvDevelopment,
                  modules: {getLocalIdent: getCSSModuleLocalIdent,},
                },
                'sass-loader'
              ),
            },
            {
              test: lessRegex,
              exclude: lessModuleRegex,
              use: getStyleLoaders(
                {
                  importLoaders: 3,
                  sourceMap: isEnvProduction
                    ? shouldUseSourceMap
                    : isEnvDevelopment,
                },
                'less-loader'
              ),
              // Don't consider CSS imports dead code even if the
              // containing package claims to have no side effects.
              // Remove this when webpack adds a warning or an error for this.
              // See https://github.com/webpack/webpack/issues/6571
              sideEffects: true,
            },
            // Adds support for CSS Modules, but using less
            // using the extension .module.less
            {
              test: lessModuleRegex,
              use: getStyleLoaders(
                {
                  importLoaders: 3,
                  sourceMap: isEnvProduction
                    ? shouldUseSourceMap
                    : isEnvDevelopment,
                  modules: {getLocalIdent: getCSSModuleLocalIdent,},
                },
                'less-loader'
              ),
            },

  2、antd 装置

• yarn add antd@^3.4.2
• yarn add babel-plugin-import@^1.13.3
• 配置动静加载：package.json 中

"babel": {
    "presets": ["react-app"],
    "plugins": [
      [
        "import",
        {
          "libraryName": "antd",
          "style": true
        }
      ]
    ]
  },

3、antd 主题配置：找到 preProcessor 在前面退出

 if (preProcessor) {
      loaders.push(
        {loader: require.resolve('resolve-url-loader'),
          options: {
            sourceMap: isEnvProduction ? shouldUseSourceMap : isEnvDevelopment,
            root: paths.appSrc,
          },
        },
        {loader: require.resolve(preProcessor),
          options: {sourceMap: true,},
        }
      );
    }
    // 在此退出
    if (preProcessor && preProcessor === 'less-loader') {
      loaders.push(
        {loader: require.resolve('resolve-url-loader'),
          options: {
            sourceMap: isEnvProduction ? shouldUseSourceMap : isEnvDevelopment,
            root: paths.appSrc,
          }
        },
        {loader: require.resolve(preProcessor),
          options: {
            sourceMap: true,
            lessOptions:{ 
              modifyVars: {'@primary-color': '#ff4757',}}
          }
        }
      );
    }

    return loaders;
  };